Ngorongoro Crater, 2,286 meters above sea level, is the largest unbroken caldera in the world Surrounded by very steep walls rising 610 meters from the crater floor, this natural amphitheatre covers an area of about 260 square, 100 square miles, and is home to up to 25,000 larger mammals, almost half of them zebras and wildebeests, warthogs, and others Such concentrated numbers attract predators, mainly lions and hyenas but also cheetahs and Leopards can rarely spotted on the crater rim ,More than 100 species of birds not found in the Serengeti have been spotted here. Countless flamingoes form a pink layer over the soda lakes.
The crater has been declared a world heritage site. Ngorongoro Crater lies within Ngorongoro Conservation Area, which covers more than 8,000 square kilometers. It is bounded Lake Eyasi in the southwest and the Gol Mountains in the north, roughly in the center are the Olbabal Swamp and the arid Olduvai Gorge. It is dotted with extinct craters and high plains and to the north is Oldonyo Lengai, a grey, forbidding perfect cone that is a still active volcano.